familyOnagraceae
subfamilyOnagraceae subfam. Onagroideae
genusOenothera
sectionOenothera sect. Anogra
speciesOenothera avita
subspeciesOenothera avita subsp. eurekensis
Oenothera avita subsp. eurekensis
in N. L. Britton et al., N. Amer. FI. ser. II, 5: 116. 1965.
Common names: Eureka Dunes evening primrose
Basionym: Oenothera deltoides subsp. eurekensis Munz & J. C. Roos Aliso 3: 118, fig. 7. 1955
Synonyms: O. californica subsp. eurekensis (Munz & J. C. Roos) W. M. Klein
Treatment appears in FNA Volume 10.
Revision as of 16:06, 4 January 2023 by GeoffLevin (talk | contribs) (GeoffLevin moved page Oenothera californica subsp. eurekensis to Oenothera avita subsp. eurekensis: Accepted name change)
Herbs perennial, densely strigillose and villous; with deep-seated, fleshy underground parts from underground horizontal rootstocks. Stems sprawling to decumbent, sometimes new rosettes forming at stem apex when becoming buried in drifting sand, 15–60 cm. Leaves: blade rhombic-ovate to oblanceolate, margins entire or weakly dentate. Flowers: floral tube 25–30 mm; sepals 15–25 mm; petals 20–30 mm. Capsules 30–70 mm. 2n = 14.
Phenology: Flowering (Mar)Jun–Jul(Sep).
Habitat: Sand dunes.
Elevation: 900–1200 m.
Discussion
Subspecies eurekensis is known from three main areas within the Eureka Dunes system, Inyo County. It is federally listed as endangered and is in the Center for Plant Conservation’s National Collection of Endangered Plants.
Selected References
None.
Lower Taxa
None.